User Manual

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Building Technologies M-bus System CE1P5361en
HVAC Products 6 Communication 08.02.2007
6 Communication
6.1 Communication between ACS7… and OZW…
.
The connection between ACS… and OZW… can be established either directly or via
modem. Both the ACS… and the OZW… must be appropriately parameterized.
6.1.1 Direct connection
In the case of the direct connection, a null modem is required between M-bus central
unit and PC.
M-bus
OZW10
PC with ACS110, ACS111,
ACT110, ACS900, ACS910
RS-232
Null modem
WZC-P250
WZC-P60
RS-485
OZW111
M-bus
RS-232
Null modem
5361Z26e
For the direct connection, a commercially available standard null modem (OZW10) or
link cable (OZW111) is required. The connections must be as follows:
Standard null modem Link cable
25 pins 9 pins
25 pins 25 pins
Female Female
2861Z06
1
2
3
4
5
6
7
8
20
1
2
3
4
5
6
7
8
20
2861Z07
7
2
3
4
5
6
22
8
20
5
2
3
1
4
4
9
7
6/8
Rate of data transmission: 9,600 Baud
Parity, data bits, stop bits: None, 8, 1
Makeup
Null modem, link cable
Data transmission